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//     Underscore.js 1.1.6
//     (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
//     Underscore is freely distributable under the MIT license.
//     Portions of Underscore are inspired or borrowed from Prototype,
//     Oliver Steele's Functional, and John Resig's Micro-Templating.
//     For all details and documentation:
//     http://documentcloud.github.com/underscore

(function() {

  // Baseline setup
  // --------------

  // Establish the root object, `window` in the browser, or `global` on the server.
  var root = this;

  // Save the previous value of the `_` variable.
  var previousUnderscore = root._;

  // Establish the object that gets returned to break out of a loop iteration.
  var breaker = {};

  // Save bytes in the minified (but not gzipped) version:
  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;

  // Create quick reference variables for speed access to core prototypes.
  var slice            = ArrayProto.slice,
      unshift          = ArrayProto.unshift,
      toString         = ObjProto.toString,
      hasOwnProperty   = ObjProto.hasOwnProperty;

  // All **ECMAScript 5** native function implementations that we hope to use
  // are declared here.
  var
    nativeForEach      = ArrayProto.forEach,
    nativeMap          = ArrayProto.map,
    nativeReduce       = ArrayProto.reduce,
    nativeReduceRight  = ArrayProto.reduceRight,
    nativeFilter       = ArrayProto.filter,
    nativeEvery        = ArrayProto.every,
    nativeSome         = ArrayProto.some,
    nativeIndexOf      = ArrayProto.indexOf,
    nativeLastIndexOf  = ArrayProto.lastIndexOf,
    nativeIsArray      = Array.isArray,
    nativeKeys         = Object.keys,
    nativeBind         = FuncProto.bind;

  // Create a safe reference to the Underscore object for use below.
  var _ = function(obj) { return new wrapper(obj); };

  // Export the Underscore object for **CommonJS**, with backwards-compatibility
  // for the old `require()` API. If we're not in CommonJS, add `_` to the
  // global object.
  if (typeof module !== 'undefined' && module.exports) {
    module.exports = _;
    _._ = _;
  } else {
    root._ = _;
  }

  // Current version.
  _.VERSION = '1.1.6';

  // Collection Functions
  // --------------------

  // The cornerstone, an `each` implementation, aka `forEach`.
  // Handles objects implementing `forEach`, arrays, and raw objects.
  // Delegates to **ECMAScript 5**'s native `forEach` if available.
  var each = _.each = _.forEach = function(obj, iterator, context) {
    if (obj == null) return;
    if (nativeForEach && obj.forEach === nativeForEach) {
      obj.forEach(iterator, context);
    } else if (_.isNumber(obj.length)) {
      for (var i = 0, l = obj.length; i < l; i++) {
        if (iterator.call(context, obj[i], i, obj) === breaker) return;
      }
    } else {
      for (var key in obj) {
        if (hasOwnProperty.call(obj, key)) {
          if (iterator.call(context, obj[key], key, obj) === breaker) return;
        }
      }
    }
  };

  // Return the results of applying the iterator to each element.
  // Delegates to **ECMAScript 5**'s native `map` if available.
  _.map = function(obj, iterator, context) {
    var results = [];
    if (obj == null) return results;
    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
    each(obj, function(value, index, list) {
      results[results.length] = iterator.call(context, value, index, list);
    });
    return results;
  };

  // **Reduce** builds up a single result from a list of values, aka `inject`,
  // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
  _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
    var initial = memo !== void 0;
    if (obj == null) obj = [];
    if (nativeReduce && obj.reduce === nativeReduce) {
      if (context) iterator = _.bind(iterator, context);
      return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
    }
    each(obj, function(value, index, list) {
      if (!initial && index === 0) {
        memo = value;
        initial = true;
      } else {
        memo = iterator.call(context, memo, value, index, list);
      }
    });
    if (!initial) throw new TypeError("Reduce of empty array with no initial value");
    return memo;
  };

  // The right-associative version of reduce, also known as `foldr`.
  // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
  _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
    if (obj == null) obj = [];
    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
      if (context) iterator = _.bind(iterator, context);
      return memo !== void 0 ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
    }
    var reversed = (_.isArray(obj) ? obj.slice() : _.toArray(obj)).reverse();
    return _.reduce(reversed, iterator, memo, context);
  };

  // Return the first value which passes a truth test. Aliased as `detect`.
  _.find = _.detect = function(obj, iterator, context) {
    var result;
    any(obj, function(value, index, list) {
      if (iterator.call(context, value, index, list)) {
        result = value;
        return true;
      }
    });
    return result;
  };

  // Return all the elements that pass a truth test.
  // Delegates to **ECMAScript 5**'s native `filter` if available.
  // Aliased as `select`.
  _.filter = _.select = function(obj, iterator, context) {
    var results = [];
    if (obj == null) return results;
    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
    each(obj, function(value, index, list) {
      if (iterator.call(context, value, index, list)) results[results.length] = value;
    });
    return results;
  };

  // Return all the elements for which a truth test fails.
  _.reject = function(obj, iterator, context) {
    var results = [];
    if (obj == null) return results;
    each(obj, function(value, index, list) {
      if (!iterator.call(context, value, index, list)) results[results.length] = value;
    });
    return results;
  };

  // Determine whether all of the elements match a truth test.
  // Delegates to **ECMAScript 5**'s native `every` if available.
  // Aliased as `all`.
  _.every = _.all = function(obj, iterator, context) {
    var result = true;
    if (obj == null) return result;
    if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
    each(obj, function(value, index, list) {
      if (!(result = result && iterator.call(context, value, index, list))) return breaker;
    });
    return result;
  };

  // Determine if at least one element in the object matches a truth test.
  // Delegates to **ECMAScript 5**'s native `some` if available.
  // Aliased as `any`.
  var any = _.some = _.any = function(obj, iterator, context) {
    iterator || (iterator = _.identity);
    var result = false;
    if (obj == null) return result;
    if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
    each(obj, function(value, index, list) {
      if (result = iterator.call(context, value, index, list)) return breaker;
    });
    return result;
  };

  // Determine if a given value is included in the array or object using `===`.
  // Aliased as `contains`.
  _.include = _.contains = function(obj, target) {
    var found = false;
    if (obj == null) return found;
    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
    any(obj, function(value) {
      if (found = value === target) return true;
    });
    return found;
  };

  // Invoke a method (with arguments) on every item in a collection.
  _.invoke = function(obj, method) {
    var args = slice.call(arguments, 2);
    return _.map(obj, function(value) {
      return (method.call ? method || value : value[method]).apply(value, args);
    });
  };

  // Convenience version of a common use case of `map`: fetching a property.
  _.pluck = function(obj, key) {
    return _.map(obj, function(value){ return value[key]; });
  };

  // Return the maximum element or (element-based computation).
  _.max = function(obj, iterator, context) {
    if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
    var result = {computed : -Infinity};
    each(obj, function(value, index, list) {
      var computed = iterator ? iterator.call(context, value, index, list) : value;
      computed >= result.computed && (result = {value : value, computed : computed});
    });
    return result.value;
  };

  // Return the minimum element (or element-based computation).
  _.min = function(obj, iterator, context) {
    if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
    var result = {computed : Infinity};
    each(obj, function(value, index, list) {
      var computed = iterator ? iterator.call(context, value, index, list) : value;
      computed < result.computed && (result = {value : value, computed : computed});
    });
    return result.value;
  };

  // Sort the object's values by a criterion produced by an iterator.
  _.sortBy = function(obj, iterator, context) {
    return _.pluck(_.map(obj, function(value, index, list) {
      return {
        value : value,
        criteria : iterator.call(context, value, index, list)
      };
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }), 'value');
  };
  
  // Groups the object's values by a criterion produced by an iterator
  _.groupBy = function(obj, iterator) {
    var result = {};
    each(obj, function(value, index) {
      var key = iterator(value, index);
      (result[key] || (result[key] = [])).push(value)
    });
    return result;
  }

  // Use a comparator function to figure out at what index an object should
  // be inserted so as to maintain order. Uses binary search.
  _.sortedIndex = function(array, obj, iterator) {
    iterator || (iterator = _.identity);
    var low = 0, high = array.length;
    while (low < high) {
      var mid = (low + high) >> 1;
      iterator(array[mid]) < iterator(obj) ? low = mid + 1 : high = mid;
    }
    return low;
  };

  // Safely convert anything iterable into a real, live array.
  _.toArray = function(iterable) {
    if (!iterable)                return [];
    if (iterable.toArray)         return iterable.toArray();
    if (_.isArray(iterable))      return iterable;
    if (_.isArguments(iterable))  return slice.call(iterable);
    return _.values(iterable);
  };

  // Return the number of elements in an object.
  _.size = function(obj) {
    return _.toArray(obj).length;
  };

  // Array Functions
  // ---------------

  // Get the first element of an array. Passing **n** will return the first N
  // values in the array. Aliased as `head`. The **guard** check allows it to work
  // with `_.map`.
  _.first = _.head = function(array, n, guard) {
    return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
  };

  // Returns everything but the first entry of the array. Aliased as `tail`.
  // Especially useful on the arguments object. Passing an **index** will return
  // the rest of the values in the array from that index onward. The **guard**
  // check allows it to work with `_.map`.
  _.rest = _.tail = function(array, index, guard) {
    return slice.call(array, (index == null) || guard ? 1 : index);
  };

  // Get the last element of an array.
  _.last = function(array) {
    return array[array.length - 1];
  };

  // Trim out all falsy values from an array.
  _.compact = function(array) {
    return _.filter(array, function(value){ return !!value; });
  };

  // Return a completely flattened version of an array.
  _.flatten = function(array) {
    return _.reduce(array, function(memo, value) {
      if (_.isArray(value)) return memo.concat(_.flatten(value));
      memo[memo.length] = value;
      return memo;
    }, []);
  };

  // Return a version of the array that does not contain the specified value(s).
  _.without = function(array) {
    var values = slice.call(arguments, 1);
    return _.filter(array, function(value){ return !_.include(values, value); });
  };

  // Produce a duplicate-free version of the array. If the array has already
  // been sorted, you have the option of using a faster algorithm.
  // Aliased as `unique`.
  _.uniq = _.unique = function(array, isSorted) {
    return _.reduce(array, function(memo, el, i) {
      if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) memo[memo.length] = el;
      return memo;
    }, []);
  };

  // Produce an array that contains every item shared between all the
  // passed-in arrays.
  _.intersect = function(array) {
    var rest = slice.call(arguments, 1);
    return _.filter(_.uniq(array), function(item) {
      return _.every(rest, function(other) {
        return _.indexOf(other, item) >= 0;
      });
    });
  };

  // Zip together multiple lists into a single array -- elements that share
  // an index go together.
  _.zip = function() {
    var args = slice.call(arguments);
    var length = _.max(_.pluck(args, 'length'));
    var results = new Array(length);
    for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i);
    return results;
  };

  // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
  // we need this function. Return the position of the first occurrence of an
  // item in an array, or -1 if the item is not included in the array.
  // Delegates to **ECMAScript 5**'s native `indexOf` if available.
  // If the array is large and already in sort order, pass `true`
  // for **isSorted** to use binary search.
  _.indexOf = function(array, item, isSorted) {
    if (array == null) return -1;
    var i, l;
    if (isSorted) {
      i = _.sortedIndex(array, item);
      return array[i] === item ? i : -1;
    }
    if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
    for (i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
    return -1;
  };


  // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
  _.lastIndexOf = function(array, item) {
    if (array == null) return -1;
    if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
    var i = array.length;
    while (i--) if (array[i] === item) return i;
    return -1;
  };

  // Generate an integer Array containing an arithmetic progression. A port of
  // the native Python `range()` function. See
  // [the Python documentation](http://docs.python.org/library/functions.html#range).
  _.range = function(start, stop, step) {
    if (arguments.length <= 1) {
      stop = start || 0;
      start = 0;
    }
    step = arguments[2] || 1;

    var len = Math.max(Math.ceil((stop - start) / step), 0);
    var idx = 0;
    var range = new Array(len);

    while(idx < len) {
      range[idx++] = start;
      start += step;
    }

    return range;
  };

  // Function (ahem) Functions
  // ------------------

  // Create a function bound to a given object (assigning `this`, and arguments,
  // optionally). Binding with arguments is also known as `curry`.
  // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
  // We check for `func.bind` first, to fail fast when `func` is undefined.
  _.bind = function(func, obj) {
    if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
    var args = slice.call(arguments, 2);
    return function() {
      return func.apply(obj, args.concat(slice.call(arguments)));
    };
  };

  // Bind all of an object's methods to that object. Useful for ensuring that
  // all callbacks defined on an object belong to it.
  _.bindAll = function(obj) {
    var funcs = slice.call(arguments, 1);
    if (funcs.length == 0) funcs = _.functions(obj);
    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
    return obj;
  };

  // Memoize an expensive function by storing its results.
  _.memoize = function(func, hasher) {
    var memo = {};
    hasher || (hasher = _.identity);
    return function() {
      var key = hasher.apply(this, arguments);
      return hasOwnProperty.call(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
    };
  };

  // Delays a function for the given number of milliseconds, and then calls
  // it with the arguments supplied.
  _.delay = function(func, wait) {
    var args = slice.call(arguments, 2);
    return setTimeout(function(){ return func.apply(func, args); }, wait);
  };

  // Defers a function, scheduling it to run after the current call stack has
  // cleared.
  _.defer = function(func) {
    return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
  };

  // Internal function used to implement `_.throttle` and `_.debounce`.
  var limit = function(func, wait, debounce) {
    var timeout;
    return function() {
      var context = this, args = arguments;
      var throttler = function() {
        timeout = null;
        func.apply(context, args);
      };
      if (debounce) clearTimeout(timeout);
      if (debounce || !timeout) timeout = setTimeout(throttler, wait);
    };
  };

  // Returns a function, that, when invoked, will only be triggered at most once
  // during a given window of time.
  _.throttle = function(func, wait) {
    return limit(func, wait, false);
  };

  // Returns a function, that, as long as it continues to be invoked, will not
  // be triggered. The function will be called after it stops being called for
  // N milliseconds.
  _.debounce = function(func, wait) {
    return limit(func, wait, true);
  };

  // Returns a function that will be executed at most one time, no matter how
  // often you call it. Useful for lazy initialization.
  _.once = function(func) {
    var ran = false, memo;
    return function() {
      if (ran) return memo;
      ran = true;
      return memo = func.apply(this, arguments);
    };
  };

  // Returns the first function passed as an argument to the second,
  // allowing you to adjust arguments, run code before and after, and
  // conditionally execute the original function.
  _.wrap = function(func, wrapper) {
    return function() {
      var args = [func].concat(slice.call(arguments));
      return wrapper.apply(this, args);
    };
  };

  // Returns a function that is the composition of a list of functions, each
  // consuming the return value of the function that follows.
  _.compose = function() {
    var funcs = slice.call(arguments);
    return function() {
      var args = slice.call(arguments);
      for (var i=funcs.length-1; i >= 0; i--) {
        args = [funcs[i].apply(this, args)];
      }
      return args[0];
    };
  };

  // Returns a function that will only be executed after being called N times.
  _.after = function(times, func) {
    return function() {
      if (--times < 1) { return func.apply(this, arguments); }
    };
  };


  // Object Functions
  // ----------------

  // Retrieve the names of an object's properties.
  // Delegates to **ECMAScript 5**'s native `Object.keys`
  _.keys = nativeKeys || function(obj) {
    if (obj !== Object(obj)) throw new TypeError('Invalid object');
    var keys = [];
    for (var key in obj) if (hasOwnProperty.call(obj, key)) keys[keys.length] = key;
    return keys;
  };

  // Retrieve the values of an object's properties.
  _.values = function(obj) {
    return _.map(obj, _.identity);
  };

  // Return a sorted list of the function names available on the object.
  // Aliased as `methods`
  _.functions = _.methods = function(obj) {
    return _.filter(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
  };

  // Extend a given object with all the properties in passed-in object(s).
  _.extend = function(obj) {
    each(slice.call(arguments, 1), function(source) {
      for (var prop in source) {
        if (source[prop] !== void 0) obj[prop] = source[prop];
      }
    });
    return obj;
  };

  // Fill in a given object with default properties.
  _.defaults = function(obj) {
    each(slice.call(arguments, 1), function(source) {
      for (var prop in source) {
        if (obj[prop] == null) obj[prop] = source[prop];
      }
    });
    return obj;
  };

  // Create a (shallow-cloned) duplicate of an object.
  _.clone = function(obj) {
    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
  };

  // Invokes interceptor with the obj, and then returns obj.
  // The primary purpose of this method is to "tap into" a method chain, in
  // order to perform operations on intermediate results within the chain.
  _.tap = function(obj, interceptor) {
    interceptor(obj);
    return obj;
  };

  // Perform a deep comparison to check if two objects are equal.
  _.isEqual = function(a, b) {
    // Check object identity.
    if (a === b) return true;
    // Different types?
    var atype = typeof(a), btype = typeof(b);
    if (atype != btype) return false;
    // Basic equality test (watch out for coercions).
    if (a == b) return true;
    // One is falsy and the other truthy.
    if ((!a && b) || (a && !b)) return false;
    // Unwrap any wrapped objects.
    if (a._chain) a = a._wrapped;
    if (b._chain) b = b._wrapped;
    // One of them implements an isEqual()?
    if (a.isEqual) return a.isEqual(b);
    // Check dates' integer values.
    if (_.isDate(a) && _.isDate(b)) return a.getTime() === b.getTime();
    // Both are NaN?
    if (_.isNaN(a) && _.isNaN(b)) return false;
    // Compare regular expressions.
    if (_.isRegExp(a) && _.isRegExp(b))
      return a.source     === b.source &&
             a.global     === b.global &&
             a.ignoreCase === b.ignoreCase &&
             a.multiline  === b.multiline;
    // If a is not an object by this point, we can't handle it.
    if (atype !== 'object') return false;
    // Check for different array lengths before comparing contents.
    if (a.length && (a.length !== b.length)) return false;
    // Nothing else worked, deep compare the contents.
    var aKeys = _.keys(a), bKeys = _.keys(b);
    // Different object sizes?
    if (aKeys.length != bKeys.length) return false;
    // Recursive comparison of contents.
    for (var key in a) if (!(key in b) || !_.isEqual(a[key], b[key])) return false;
    return true;
  };

  // Is a given array or object empty?
  _.isEmpty = function(obj) {
    if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
    for (var key in obj) if (hasOwnProperty.call(obj, key)) return false;
    return true;
  };

  // Is a given value a DOM element?
  _.isElement = function(obj) {
    return !!(obj && obj.nodeType == 1);
  };

  // Is a given value an array?
  // Delegates to ECMA5's native Array.isArray
  _.isArray = nativeIsArray || function(obj) {
    return toString.call(obj) === '[object Array]';
  };

  // Is a given variable an arguments object?
  _.isArguments = function(obj) {
    return !!(obj && hasOwnProperty.call(obj, 'callee'));
  };

  // Is a given value a function?
  _.isFunction = function(obj) {
    return !!(obj && obj.constructor && obj.call && obj.apply);
  };

  // Is a given value a string?
  _.isString = function(obj) {
    return !!(obj === '' || (obj && obj.charCodeAt && obj.substr));
  };

  // Is a given value a number?
  _.isNumber = function(obj) {
    return !!(obj === 0 || (obj && obj.toExponential && obj.toFixed));
  };

  // Is the given value `NaN`? `NaN` happens to be the only value in JavaScript
  // that does not equal itself.
  _.isNaN = function(obj) {
    return obj !== obj;
  };

  // Is a given value a boolean?
  _.isBoolean = function(obj) {
    return obj === true || obj === false;
  };

  // Is a given value a date?
  _.isDate = function(obj) {
    return !!(obj && obj.getTimezoneOffset && obj.setUTCFullYear);
  };

  // Is the given value a regular expression?
  _.isRegExp = function(obj) {
    return !!(obj && obj.test && obj.exec && (obj.ignoreCase || obj.ignoreCase === false));
  };

  // Is a given value equal to null?
  _.isNull = function(obj) {
    return obj === null;
  };

  // Is a given variable undefined?
  _.isUndefined = function(obj) {
    return obj === void 0;
  };

  // Utility Functions
  // -----------------

  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
  // previous owner. Returns a reference to the Underscore object.
  _.noConflict = function() {
    root._ = previousUnderscore;
    return this;
  };

  // Keep the identity function around for default iterators.
  _.identity = function(value) {
    return value;
  };

  // Run a function **n** times.
  _.times = function (n, iterator, context) {
    for (var i = 0; i < n; i++) iterator.call(context, i);
  };

  // Add your own custom functions to the Underscore object, ensuring that
  // they're correctly added to the OOP wrapper as well.
  _.mixin = function(obj) {
    each(_.functions(obj), function(name){
      addToWrapper(name, _[name] = obj[name]);
    });
  };

  // Generate a unique integer id (unique within the entire client session).
  // Useful for temporary DOM ids.
  var idCounter = 0;
  _.uniqueId = function(prefix) {
    var id = idCounter++;
    return prefix ? prefix + id : id;
  };

  // By default, Underscore uses ERB-style template delimiters, change the
  // following template settings to use alternative delimiters.
  _.templateSettings = {
    evaluate    : /<%([\s\S]+?)%>/g,
    interpolate : /<%=([\s\S]+?)%>/g
  };

  // JavaScript micro-templating, similar to John Resig's implementation.
  // Underscore templating handles arbitrary delimiters, preserves whitespace,
  // and correctly escapes quotes within interpolated code.
  _.template = function(str, data) {
    var c  = _.templateSettings;
    var tmpl = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
      'with(obj||{}){__p.push(\'' +
      str.replace(/\\/g, '\\\\')
         .replace(/'/g, "\\'")
         .replace(c.interpolate, function(match, code) {
           return "'," + code.replace(/\\'/g, "'") + ",'";
         })
         .replace(c.evaluate || null, function(match, code) {
           return "');" + code.replace(/\\'/g, "'")
                              .replace(/[\r\n\t]/g, ' ') + "__p.push('";
         })
         .replace(/\r/g, '\\r')
         .replace(/\n/g, '\\n')
         .replace(/\t/g, '\\t')
         + "');}return __p.join('');";
    var func = new Function('obj', tmpl);
    return data ? func(data) : func;
  };

  // The OOP Wrapper
  // ---------------

  // If Underscore is called as a function, it returns a wrapped object that
  // can be used OO-style. This wrapper holds altered versions of all the
  // underscore functions. Wrapped objects may be chained.
  var wrapper = function(obj) { this._wrapped = obj; };

  // Expose `wrapper.prototype` as `_.prototype`
  _.prototype = wrapper.prototype;

  // Helper function to continue chaining intermediate results.
  var result = function(obj, chain) {
    return chain ? _(obj).chain() : obj;
  };

  // A method to easily add functions to the OOP wrapper.
  var addToWrapper = function(name, func) {
    wrapper.prototype[name] = function() {
      var args = slice.call(arguments);
      unshift.call(args, this._wrapped);
      return result(func.apply(_, args), this._chain);
    };
  };

  // Add all of the Underscore functions to the wrapper object.
  _.mixin(_);

  // Add all mutator Array functions to the wrapper.
  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
    var method = ArrayProto[name];
    wrapper.prototype[name] = function() {
      method.apply(this._wrapped, arguments);
      return result(this._wrapped, this._chain);
    };
  });

  // Add all accessor Array functions to the wrapper.
  each(['concat', 'join', 'slice'], function(name) {
    var method = ArrayProto[name];
    wrapper.prototype[name] = function() {
      return result(method.apply(this._wrapped, arguments), this._chain);
    };
  });

  // Start chaining a wrapped Underscore object.
  wrapper.prototype.chain = function() {
    this._chain = true;
    return this;
  };

  // Extracts the result from a wrapped and chained object.
  wrapper.prototype.value = function() {
    return this._wrapped;
  };

})();


(function(exports) {
  var $j = jQuery;
  $j(document.body).ready(init);

  exports.JST = {};

  function init() {
    _($j('script[type=text]')).each(function(s) {
      s = $j(s);
      exports.JST[s.attr('id')] = _.template(s.text() || s.html());
    });
  }
})(this);


(function() {

  var root = this;
  root._sel = {};

  function Class() {};
  function Module() {};
  
  _.mixin({
    // create grouping of functions. Can be used with classes
    // to combine functionality.
    Module: function(obj) {
      var m = new Module;
      m._module = true;
      _(obj).each(function(v, k) {
        m[k] = v;
      });
      m.toString = function() {
        return ["<Module: ", (obj.name || _uniqueId("UnnamedModule")), ">"].join("");
      };
      return m;
    },

    // check if an object is a Module
    isModule: function(x) {
      return x._module === true;
    },

    // check if an object is using a module
    includes: function(x, module) {
      return _(module).isModule() && _(x.includes).indexOf(module) != -1;
    },

    // creates a class. does not support inheritance because inheritance
    // and AJAX do not work well together. Use Modules instead.
    Class: function(obj) {
      obj = obj || {};

      // set the name, or default to unique UnnamedClass
      // created an array of any included modules
      var modules = obj.includes || [],
          name = obj.name = (obj.name || _.uniqueId("UnnamedClass")),
          methodMaps = _(modules).map(function(x) {
            x = _(x).clone(); delete x.name; delete x.toString; delete x._module; return x;
          });

      obj = _.reduce(methodMaps.concat(obj), function(memo, m) {
        return _.extend(memo, m);
      }, {});
      obj = _(obj).extend({
        toString: function() {
          return ["<Class: ", name, ">"].join("");
        }
      });

      var klass = function() {
        if(_.isFunction(this.initialize)) {
          if(_.isFunction(this.initializeBefore)) {
            this.initializeBefore();
          }
          this.initialize.apply(this, arguments);
          if(_.isFunction(this.initializeAfter)) {
            this.initializeAfter();
          }
          return this;
        } else {
          if(console && console.warn) console.warn(name + " does not define an initialize method");
          return this;
        }
      };

      klass._name = name;
      klass._class = true;
      klass._modules = klass._modules = modules;
      klass.prototype = new Class;

      _(obj).each(function(v, k) {
        klass.prototype[k] = v;
        if(_.isFunction(v) && _.isUndefined(_sel[k])) {
          _sel[k] = function() {
            var args = arguments;
            return function(x) {
              return x[k].apply(x, args);
            };
          };
        }
      });
      
      return klass;
    },

    isClass: function(x) {
      return x._class === true;
    }
  });

})();


(function() {
var root = this;
root.URL = _.Class({
  initialize: function(options) {
    this.protocol = options.protocol || "http";
    this.host = options.host;
    this.port = options.port || "";
    this.path = options.path || "";
    this.params = options.params || null;
    this.hash = options.hash || "";
  },
  set: function(p, v) {
    this[p] = v;
    return this;
  },
  queryString: function() {
    if(_(this.params).keys().length == 0) return "";
    return _(this.params).map(function(v, k) {
      return k + "=" + v;
    }).join("&");
  },
  addComponent: function(component) {
    this.path = [this.path, component].join("/");
    return this;
  },
  addParam: function(k, v) {
    var temp = {};
    temp[k] = v;
    _(this.params).extend(temp);
    return this;
  },
  toUrlString: function() {
    if(!this.host) throw new Error("No host specified");
    var portStr = (!this.port) ? "" : ":" + this.port,
        qs = this.queryString(),
        queryStr = qs ? "?" + qs : "",
        hashStr = this.hash ? "#" + this.hash : "";
    return [this.protocol || "http", "://",
            this.host,
            portStr,
            this.path,
            queryStr,
            hashStr].join("");
  }
});

function parseParams(paramString) {
  var xs = paramString.replace(/^\?/,'').split('&');
  return _.reduce(xs, function(memo, x) {
    var temp = {},
        kv = x.split("=");
    if(kv[0]) {
      temp[kv[0]] = kv[1];
      return _(memo).extend(temp);
    } else {
      return memo;
    }
  }, {});
};

// adapted from http://snipplr.com/view/12659/parseurl/  
root.URL.parse = function(urlString) {
  var temp = jQuery("<a/>")[0];
  temp.href = urlString;
  return new URL({
    protocol: temp.protocol.replace(":", ""),
    host: temp.hostname,
    port: temp.port,
    path: temp.pathname.replace(/^([^\/])/,'/$1'),
    params: parseParams(temp.search),
    hash: temp.hash.replace('#','')
  });
};
})();



(function() {

  function attributes(el) {
    var attrs = {},
        attr;
    el = (_.isElement(el)) ? el : el[0];
    _(el.attributes.length).times(function(i) {
      attr = el.attributes.item(i);
      if(attr.specified) attrs[attr.name]=attr.value;  
    });
    return attrs;
  };

  function capitalize(str) {
    return str.charAt(0).toUpperCase() + str.substring(1).toLowerCase();
  };

  function dashesToCamelCase(str) {
    return _(str.split("-")).map(function(s, i) {
      if(i == 0) return s;
      return capitalize(s);
    }).join("");
  };
  
  var root = this;
  root.Options = _.Module({
    name: "Options",
    getOptions: function(el, prefix) {
      prefix = "data-" + (prefix || "");
      var r = new RegExp("^"+prefix),
          options = {};
      _(attributes(el)).each(function(v, k) {
        if(k.match(r)) {
          k = k.replace(prefix+"-", "");
          k = dashesToCamelCase(k);
          options[k] = v;
        }
      });
      return options;
    }
  });
  
})();



(function() {
  var root = this;
  root.Events = _.Module({
    name: "Events",
    
    addEvent: function (type, fn) {
      if(!this._events) this._events = {};
      var events = this._events;
      if(!events[type]) events[type] = [];
      events[type].push(fn);
    },
    
    fireEvent: function(type, x) {
      var events = this._events[type];
      if(events) {
        _(events).each(function(fn) {
          fn(x);
        });
      }
    },

    removeEvent: function(type, fn) {
      var events = this._events;
      if(events && events[type]) {
        events[type] = _(events[type]).without(fn);
      }
    },

    removeEvents: function(type) {
      var events = this._events;
      if(events[type]) {
        events[type] = [];
      }
    }
  });
})();






var NYTD = window.NYTD || {};
NYTD.NYTINT = NYTD.NYTINT || {};
var $j = jQuery;

(function() {
  
// Template Helpers
// =============================================================================  

function parseComment(comment, offset) {
  var parsedDate               = parseDate(comment.createDate);
  comment.dateStr              = parsedDate.date;
  comment.timeStr              = parsedDate.time;
  comment.commentBody          = parseBody(comment.commentBody);
  comment.recommendationString = recommendationString(comment.recommendations);
  comment.permalink            = URL.parse(window.location.href)
                                    .addParam("permid", comment.commentSequence)
                                    .addParam("offset", offset || 1)
                                    .set("hash", "comment"+comment.commentSequence)
                                    .toUrlString();
  return comment;
};

// export so JST can see it
NYTD.NYTINT.parseComment = parseComment;  

function parseDate(seconds) {
  var mdate  = new Date(parseInt(seconds,10)*1000),
      year   = mdate.getFullYear(),
      months = ["January", "February", "March", "April", "May",
                "June", "July", "August", "September", "October",
                "November", "December"],
      month  = months[mdate.getMonth()],
      day    = mdate.getDate(),
      suffix = "th",
      hour   = (mdate.getHours() > 12) ? mdate.getHours() - 12 : mdate.getHours(),
      min    = (mdate.getMinutes() < 10) ? "0" + mdate.getMinutes() : mdate.getMinutes(),
      ampm   = (mdate.getHours() >= 12 && mdate.getHours() < 24) ? "pm" : "am";
  
  if (min == "60") { min = "59"; }
  
  if(hour == 0) hour = 12;
  
  if (day == 1 || day == 21 || day == 31) {
    suffix = "st";
  } else if (day == 2 || day == 22) {
    suffix = "nd";
  } else if (day == 3 || day == 23) {
    suffix = "rd";
  }
  
  return {
    date: [month, " ", day, suffix, ", ", year].join(""),
    time: [hour, ":", min, " ", ampm].join("")
  };
};

function recommendationString(n) {
  if (n == 1) {
    return "Recommended by 1 Reader";
  } else {
    return ["Recommended by", n, "Readers"].join(" "); 
  }
};
  
function parseUrl(request, response) {
  var url = response.communityHost+"/comments/";
  url += request.request.url.replace("http://", "");
  return url;
};

function parseBody(commentBody) {
  if(commentBody) {
    return commentBody;
  } else {
    return 'This comment has been removed. Comments are moderated and generally will be posted if they are on-topic and not abusive. For more information, please see our <a href="http://www.nytimes.com/ref/membercenter/faq/comments.html" target="_blank">Comments FAQ</a>.';  
  }
};

// toHash mixin
// =============================================================================  

_.mixin({
  toHash: function(ary) {
    var hash = {};
    _(ary).each(function(x) {
      hash[x[0]] = x[1];
    });
    return hash;
  }
});

// NYTD.NYTINT.Asset
//   This Type needs NYTD.NYTINT.Community at the moment. It also expects a
//   a script tag with id nytint-comment-report-abuse-template in order to
//   generate the UI.
// =============================================================================

NYTD.NYTINT.Asset = _.Class({
  name: "Asset",
  includes: [Events, Options],
  
  /*
    Required parameters:
      assetUrl
      taxonomy
   */
  initialize: function(element, options) {
    this.element      = $j(element);
    
    if(!this.element.id) {
      this.element.attr("id", _.uniqueId("AssetInstance"));
    }

    this.options       = _.extend(this.getOptions(this.element, "nytint-option"), options);
    this.setDelegate(options.delegate);

    var parsed = URL.parse(window.location.href),
        currentPage = (parsed.params && parsed.params.offset) ? parseInt(parsed.params.offset) : 0;
    
    this.assetUrl      = this.options['assetUrl'];
    this.taxonomy      = this.options['taxonomy'];
    this.displayParams = {};
    this.currentPage   = currentPage || parseInt(this.options['currentPage']) || 1;
    this.perPage       = parseInt(this.options['perPage']) || 2;
    this.numPages      = null;
    this.sort          = this.options.sort || "oldest";
    this.reportAbuseEl = $j("<div class='nytint-comment-report-abuse nytint-display-none' />");
    this.initReportAbuse();
    this.initHighlightTooltip();
    this.initWhatsThisToolTip();
  },

  // return the delegate, a loose coupling to the AssetManager
  delegate: function() {
    return this._delegate;
  },

  // set the delegate, a loose coupling the AssetManager
  setDelegate: function(delegate) {
    this._delegate = delegate;
  },

  id: function() {
    return this.element.attr("id");
  },

  // --------------------------------------------------
  // Init
  // --------------------------------------------------

  initReportAbuse: function() {
    this.reportAbuseEl.html(this.reportAbuseHtml());
    this.reportAbuseEl.find(".nytint-comment-report-abuse-close").click(_.bind(this.hideReportAbuse, this));
    this.reportAbuseEl.find(".nytint-comment-report-abuse-cancel").click(_.bind(this.hideReportAbuse, this));
    this.reportAbuseEl.find(".nytint-comment-report-abuse-submit").click(_.bind(this.flagComment, this));
    $j(document.body).append(this.reportAbuseEl);
  },

  initHighlightTooltip: function() {
    this.highlightTooltip = $j("<div class='nytint-tooltip nytint-highlight-tooltip nytint-display-none'>A selection of the most interesting and thoughtful comments that represent a range of views.</div>");
    $j(document.body).append(this.highlightTooltip);
  },

  initWhatsThisToolTip: function() {
    this.whatsThisTooltip = $j("<div class='nytint-tooltip nytint-whats-this-tooltip nytint-display-none'>Your Display Name will be associated with all your comments and reviews on NYTimes.com. We encourage readers to use their real name or initials. It should be different from the private Member ID or e-mail address you use to log into the site.</div>");
    $j(document.body).append(this.whatsThisTooltip);
  },
  
  activateSubmitButton: function() {
    this.element.find("form").submit(_.bind(function(event) {
      event.preventDefault();
      this.postComment(event.target);
    }, this));
  }, 

  // associate a element with method
  activateLink: function(className, handler) {
    var elements = this.element.find(className);
    _(elements).each(function(el) {
      $j(el).click(function(event) {
        event.preventDefault();
        handler(event);
      });
    });
  },

  // activate all the links and sets up other ui events
  activateCommentForm: function() {
    this.activateSubmitButton();
    var self = this;
    _([['.nytint-comment-previous-page', _.bind(this.previousPage, this)],
       ['.nytint-comment-next-page', _.bind(this.nextPage, this)],
       ['.nytint-comment-newest', _.bind(this.newest, this)],
       ['.nytint-comment-highlights', _.bind(this.highlights, this)],
       ['.nytint-comment-recommended', _.bind(this.recommended, this)],
       ['.nytint-comment-replied', _.bind(this.replied, this)],
       ['.nytint-comment-oldest', _.bind(this.oldest, this)],
       ['.nytint-comment-recommendation', _.bind(function(e) {
         this.recommendComment(e, true);
       }, this)],
       ['.nytint-comment-user-recommended', _.bind(function(e) {
         this.recommendComment(e, false);
       }, this)],
       ['.nytint-comment-inappropriate', _.bind(this.showReportAbuse, this)],
       ['.nytint-submit-another-comment', _.bind(this.submitAnotherComment, this)]
      ]).each(function(args) {
        self.activateLink.apply(self, args);
      });
    this.element.find("textarea").keyup(_.bind(function(e) {
      var remaining = 5000-this.element.find("textarea").val().length;
      this.element.find(".nytint-comment-remaining-chars span").text(remaining);
      if(remaining < 0) {
        this.element.find(".nytint-comment-remaining-chars").addClass("nyint-comment-red");
      } else {
        this.element.find(".nytint-comment-remaining-chars").removeClass("nytint-comment-red");
      }
    }, this));
    this.element.find(".nytint-comment-current-page").keyup(_.bind(function(evt) {
      var page = parseInt($j(evt.target).attr("value"));
      if(page > this.numPages) {
        page = this.numPages;
      } else if(page < 1) {
        page = 1;
      }
      if(evt.keyCode == 13) {
        this.delegate().callApi(this.displayRequest({'page': page}));
      }
    }, this));
  },

  // --------------------------------------------------
  // State
  // --------------------------------------------------

  /*
    Function: setCurrentComment
      Comments are identified by their index in the list
      of the asset's comments. Confusing I know. - David
   */
  setCurrentComment: function(sequence) {
    this._currentComment = sequence;
  },

  // returns the current comment sequence id - see above
  currentComment: function() {
    return this._currentComment;
  },

  // --------------------------------------------------
  // Paging Helpers
  // --------------------------------------------------

  nextPage: function() {
    this.delegate().callApi(this.displayRequest({'page': this.currentPage+1}));
  },

  previousPage: function() {
    this.delegate().callApi(this.displayRequest({'page': this.currentPage-1}));
  },

  // --------------------------------------------------
  // Tabs
  // --------------------------------------------------

  // returns an object to be used to fetch new data
  // based on the sort parameter
  getRequest: function(sort, options) {
    var d = {};
    if(options && options.permid) d.permid = options.permid;
    if(options && options.offset) d.offset = options.offset;
    d.sort = sort;
    return this.displayRequest(d);
  },
  get: function (sort) {
    this.delegate().callApi(this.getRequest(sort));
  },

  highlights: function() {
    this.get("highlights");
  },

  recommended: function() {
    this.get("recommended");
  },

  oldest: function() {
    this.get('oldest');
  },

  newestRequest: function() {
    return this.getRequest("newest");
  },
  newest: function() {
    this.get('newest');
  },

  defaultRequest: function(options) {
    return this.getRequest(this.sort || "oldest", options);
  },

  replied: function() {
    this.get('replied');
  },
      
  setPageInfo: function(page, numPages) {
    this.currentPage = page;
    this.numPages = numPages;
  },
  
  // --------------------------------------------------
  // UI
  // --------------------------------------------------
  
  showReportAbuse: function(e) {
    var target = e.target,
        position = $j(target).offset(),
        sequence = this.commentSequenceFromTarget(target);
    this.setCurrentComment(sequence);
    this.reportAbuseEl.removeClass("nytint-display-none");
    this.reportAbuseEl.css({
      left: position.left-144,
      top: position.top-1
    });
  },

  hideReportAbuse: function() {
    this.reportAbuseEl.addClass("nytint-display-none");
    this.reportAbuseEl.find('input[checked]').attr("checked", false);
  },

  updateReportAbuse: function(response, request) {
    var comment = this.element.find("*[rel='"+recommendation.commentSequence+"']");
    if(comment) {
    }
  },
  
  hideRecommendationButton: function(respnose, status) {
  },
  
  hidePostForm: function(response, status) {
    this.element.find(".nytint-comment-form-section").addClass("nytint-display-none");
    this.element.find(".nytint-submit-another-comment").removeClass("nytint-display-none");
    this.element.find(".nytint-comment-submit-feedback-info").removeClass("nytint-display-none");
    this.element.find(".nytint-comment-divider-footer").removeClass("nytint-display-none");
  },

  reportAbuseHtml: function() {
    var ctxt = {
      flagOptions: ["Vulgar", "Spam", "Inflammatory", "Off-topic", "Personal Attack"]
    };
    return JST.comment_abuse(ctxt);
  },

  renderComments: function(context) {
    $j(this.element).html(JST.comments(context));
  },

  tabs: {
    "oldest": "all",
    "newest": "all",
    "highlights": "highlights",
    "recommended": "recommendations",
    "replied": "replied"
  },

  // update the asset's interface
  // including comments and the user information
  showComments: function(request, response, unapproved, user) {
    var context  = {},
        page     = this.currentPage = request.offset / request.count + 1,
        numPages = Math.ceil(response.totalCommentsFound / request.count);

    context.totalComments      = (response.totalCommentsFound == 1) ? "1 Reader Comment" : response.totalCommentsFound + " Readers' Comments";
    context.totalCommentsFound = response.totalCommentsFound;
    context.page           = page;
    context.numPages       = this.numPages = numPages;
    context.comments       = response.comments;
    context.unapproved     = unapproved || [];
    context.sort           = this.sort = request.sort;
    context.asset          = this;
    context.user           = user;
    context.assetId        = this.id();
    context.url            = window.location.href;
    context.commentsClosed = !response.canSubmit;
    context.showPagination = ((context.totalCommentsFound / this.perPage) > 1);

    if(!user) {
      context.loginUrl = "http://www.nytimes.com/auth/login?URI=" + window.location;
      context.registerUrl = "http://www.nytimes.com/gst/regi.html?URI=" + window.location;
    }

    context.comments = _(context.comments).map(function(comment) {
      return parseComment(comment, page);
    });

    this.setPageInfo(page, this.numPages);
    this.renderComments(context);
    this.activateCommentForm();
    this.highlightTab(request.sort);
    this.highlightSort(request.sort);
    this.initEmailCheckbox();
    this.initHighlightLinks();
    this.initWhatsThisLinks();
  },
  
  showUnapprovedComments: function(unapproved, user) {
    var html = JST.unapproved({
      unapproved: unapproved,
      user: user
    });
    this.element.find(".nytint-unapproved-comments").html(html);
  },

  highlightTab: function(tab) {
    var tabs = this.element.find(".nytint-comment-tab-item");
    tabs.removeClass("nytint-selected");
    this.element.find(".nytint-comment-tab-"+this.tabs[tab]).addClass("nytint-selected");
  },

  highlightSort: function(sort) {
    $j(".nytint-comment-oldest-newest a").removeClass("selected");
    if(sort == "newest") {
      $j('.nytint-comment-newest').addClass("selected");
    } else if(sort == "oldest") {
      $j('.nytint-comment-oldest').addClass("selected");
    }
  },

  initEmailCheckbox: function() {
    this.element.find('.nytint-send-email-checkbox').attr("id", this.id()+"EmailCheckbox");
    this.element.find('.nytint-send-email-prompt').attr("for", this.id()+"EmailCheckbox");
  },

  initHighlightLinks: function() {
    this.element.find('.nytint-editor-selection-header-info').hover(
      _.bind(function(e) {
        var target = e.target,
            position = $j(target).offset();
        this.highlightTooltip.removeClass("nytint-display-none");
        this.highlightTooltip.css({
          left: position.left+$j(target).width(),
          top: position.top
        });
      }, this),
      _.bind(function(e) {
        this.highlightTooltip.addClass("nytint-display-none");
      }, this));
  },
  
  initWhatsThisLinks: function() {
    this.element.find('.nytint-comment-whats-this').hover(
      _.bind(function(e) {
        var target = e.target,
            position = $j(target).offset();
        this.whatsThisTooltip.removeClass("nytint-display-none");
        this.whatsThisTooltip.css({
          left: position.left+$j(target).width()+8,
          top: position.top
        });
      }, this),
      _.bind(function(e) {
        this.whatsThisTooltip.addClass("nytint-display-none");
      }, this));
  },

  // for showing all of the user's recommendations
  showRecommended: function(request, response) {
    try {
      var recommendations = response.recommendations;
      if(recommendations) {
        _(recommendations).each(_.bind(function(x) {
          var copy = _.extend(x);
          x.recommend = "1";
          this.updateRecommendation(x);
        }, this));
      }
    } catch(err) {
    }
  },
  
  // this is for when a user recommends or unrecommends
  // a single comment
  updateRecommendation: function(recommendation) {
    var comment = this.element.find("*[rel='"+recommendation.commentSequence+"']"),
        recommend = parseInt(recommendation.recommend);
    if(recommend) {
      comment.find(".nytint-comment-recommend-action .nytint-comment-recommendation").addClass("nytint-display-none");
      comment.find(".nytint-comment-recommend-action .nytint-comment-user-recommended").removeClass("nytint-display-none");      
    } else {
      comment.find(".nytint-comment-recommend-action .nytint-comment-recommendation").removeClass("nytint-display-none");
      comment.find(".nytint-comment-recommend-action .nytint-comment-user-recommended").addClass("nytint-display-none");
    }
    var n = recommendation.recommendations;
    if(n !== undefined) {
      comment.find(".nytint-comment-recommended-by").text(recommendationString(n));
    }
  },

  showFlagged: function(request, response) {
    try{
      var reportAbuse = response.reportAbuse;
      if(reportAbuse) {
        _(reportAbuse).each(_.bind(function(x) {
          this.updateFlagged(x);
          var comment = this.element.find("*[rel='"+x.commentSequence+"']");
        }, this));
      }
    } catch (x) {
    }
  },

  updateFlagged: function(flagged) {
    var comment = this.element.find("*[rel='"+flagged.commentSequence+"']");
    comment.find(".nytint-comment-inappropriate a").addClass("nytint-display-none");
    comment.find(".nytint-comment-inappropriate span").removeClass("nytint-display-none");
  },

  // update the user information in the comment
  // submission form
  renderUserProfile: function(response) {
    var data = response.results;
    $j("input.nytint-user_location").val(data.location);
    $j("input.nytint-user_name").val(data.displayName);
  },

  // --------------------------------------------------
  // Utilities
  // --------------------------------------------------

  commentSequenceFromTarget: function(el) {
    return parseInt($j(el).parents(".nytint-comment").attr("rel"), 10);
  },
  
  // --------------------------------------------------
  // AJAX
  // --------------------------------------------------

  request: function(requestType, options) {
    var request = {
      assetTaxonomy: this.taxonomy,
      url: this.assetUrl
    };
    if(requestType) request.requestType = requestType;
    if(options && options.params) {
      _(options.params).each(function(v, k) {
        request[k] = v;
      });
    }
    var wrapper = {};
    wrapper[this.id()+":"+requestType] = {request: request};
    return wrapper;
  },
  
  // build the request for a page of comments data
  displayRequest: function(params) {
    if(_.isUndefined(params.sort)) params.sort = this.sort || "oldest";
    if(_.isUndefined(params.count)) params.count = this.perPage;
    if(_.isUndefined(params.page) || _.isNull(params.page)) {
      if(params.permid) {
        params.page = (params.permid / this.perPage).floor() + 1;
      } else if(!_.isUndefined(this.currentPage)) {
        params.page = this.currentPage;
      } else {
        params.page = 1;        
      }
    }
    params.offset = (params.page - 1) * params.count; 
    delete params.page;
    params.status = "was-approved";
    var commentsRequest = this.request("UserContent", {params:params}),
        otherRequests = _(["AuthUsersContent", "AuthUsersReportAbuse", "AuthUsersRecommendations"]).map(_.bind(this.request, this));
    return _.reduce(otherRequests, function(memo, x) {
      return _.extend(memo, x);
    }, commentsRequest);
  },

  // fetch only the user's comments used right after a user submits
  // a comment
  usersComments: function(params) {
    return this.delegate().callApi(this.request("AuthUsersContent"));
  },

  postComment: function(form) {
    var formParams = $j(form).serializeArray(),
        params = _(_(formParams).map(function(el) {
          return [el.name, el.value];
        })).toHash();
    var request = this.request("SubmitUserContent", {params: params, post: true});
    if(this.element.find(".nytint-comment-notify")[0].checked) {
      params = {notify: 1};
      request = _.extend(request, this.request("CommentNotification", {params: params, post: true}));
    }
    this.delegate().callApi(request, true);
  },

  submitAnotherComment: function(args) {
    this.element.find(".nytint-comment-form-section").removeClass("nytint-display-none");
    this.element.find(".nytint-submit-another-comment").addClass("nytint-display-none");
    this.element.find(".nytint-comment-submit-feedback-info").addClass("nytint-display-none");
    this.element.find(".nytint-comment-divider-footer").addClass("nytint-display-none");
  },

  flagComment: function(e) {
    var params = {
          commentSequence: this.currentComment(),
          commentLabels: _($j(this.reportAbuseEl).find('input[checked]')).map(function(x) {
            return $j(x).attr("value");
          }).join()
        },
        request = this.request("SubmitReportAbuse", {params: params});
    this.delegate().callApi(request, true);
  },

  recommendComment: function(e, bool) {
    var params = {
          commentSequence: (this.commentSequenceFromTarget(e.target)),
          recommend: (bool ? 1 : 0)
        },
        request = this.request("SubmitUserRecommendation", {params: params});
    this.delegate().callApi(request, true);
  }
});
  
})();

// =============================================================================
// NYTD.NYTINT.AssetManager
//   Singleton class that manages multiple Asset instances. The main purpose
//   is to aggregate all of the initial request so that seperate requests for
//   data is unnecessary

(function() {

function checkHash() {
  if(window.location.hash.length > 1) {
    if (navigator.userAgent.indexOf("Firefox")!=-1) {
      location.hash = window.location.hash;
    } else {
      var hash = window.location.hash.replace("#", "");
      location.hash = "comment1";
      location.hash = hash;
    }
  }
};

var Asset = NYTD.NYTINT.Asset; 
  
NYTD.NYTINT.AssetManager = _.Class({
  name: "AssetManager",
  
  SVC_URL: "/svc/community/V2/requestHandler",
  PROXY_URL: "/roomfordebate/community",
  
  initialize: function() {
    this.initAssets();
  },

  // initialze any assets found on the page
  initAssets: function(sel) {
    var assetEls = $j("*[data-nytint-class='Asset']"),
        params = URL.parse(window.location.href).params,
        permid = params.permid,
        offset = params.offset;

    if(_(assetEls).toArray().length == 0) return;

    this.SVC_URL = assetEls.attr("data-nytint-option-svc-url") || this.SVC_URL;
    this.PROXY_URL = assetEls.attr("data-nytint-option-proxy-url") || this.PROXY_URL;
    this.assets = {};

    _(assetEls).each(_.bind(function(el) {
      var x = new Asset($j(el), {delegate: this});
      this.assets[x.id()] = x;
    }, this));

    var requests = _(this.assets).map(function(asset) {
      var d = {};
      if(permid) d.permid = permid;
      if(offset) d.offset = offset;
      return asset.defaultRequest(d);
    });

    this.callApi(requests);
  },

  // group the result of callApi by Asset ids
  groupByAsset: function(results) {
    var grouped = {};
    _(results).each(function(v, k) {
      if(typeof v.errorCode != 'undefined') {
        return;
      }
      var parts = k.split(":"),
          assetId = parts[0],
          requestType = parts[1],
          url = v.request.url;
      if(url) {
        if(!grouped[assetId]) grouped[assetId] = {};
        grouped[assetId][requestType] = v;
      }
    });
    return grouped;
  },

  // update the relevant assets
  updateAssets: function(results, status) {
    var grouped = this.groupByAsset(results),
        user;
    if(results.AuthUserProfile) {
      try {
        user = results.AuthUserProfile.response.AuthUserProfile.results;          
      } catch (x) {
      }
    }
    _(grouped).each(_.bind(function(v, k) {
      var asset = this.assets[k],
          unapproved,
          fullLoad = false,
          authenticated = true;
      try {
        authenticated = (typeof v.AuthUsersContent.response.statusCode == "undefined");
      } catch (x) {
      }
      if(v.AuthUsersContent && authenticated) {
        var allUserComments = v.AuthUsersContent.response.AuthUsersContent.comments;
        unapproved = _(allUserComments).filter(function(comment) {
          return comment.status == 'new';
        });
      }
      if(v.UserContent) {
        fullLoad = true;
        asset.showComments(v.UserContent.request,
                           v.UserContent.response.UserContent,
                           unapproved,
                           user);
        if(authenticated) {
          asset.showFlagged(v.AuthUsersReportAbuse.request,
                          v.AuthUsersReportAbuse.response.AuthUsersReportAbuse);
          asset.showRecommended(v.AuthUsersRecommendations.request,
                              v.AuthUsersRecommendations.response.AuthUsersRecommendations);
        }
      } else if(v.SubmitUserRecommendation) {
        var copy = _.extend(v.SubmitUserRecommendation.request);
        copy.recommendations = v.SubmitUserRecommendation.response.recommendations;
        asset.updateRecommendation(copy);
      } else if(v.SubmitReportAbuse) {
        asset.hideReportAbuse();
        asset.updateReportAbuse(v.SubmitReportAbuse.response, v.SubmitReportAbuse.request);
      } else if(v.SubmitUserContent) {
        // refresh the comments widget
        asset.hidePostForm();
        asset.usersComments();
      } else if(v.AuthUsersContent && authenticated) {
        asset.showUnapprovedComments(unapproved, user);
      }
    }, this));
    if(user) {
      try {
        $j("*[data-nytint-class='Asset'] .nytint-comment-input-username").val(user.displayName || "");
        $j("*[data-nytint-class='Asset'] .nytint-comment-input-user-location").val(user.location || "");
        $j("*[data-nytint-class='Asset'] .nytint-user-email").text(user.email || "");
        $j("*[data-nytint-class='Asset'] .nytint-submitted-username").text(user.displayName || "");
        $j("*[data-nytint-class='Asset'] .nytint-submitted-user-location").text(user.location || "");
      } catch (x) {
      }
    }
    setTimeout(checkHash, 0);
  },

  // call the api
  // request is an object whose keys should take of
  // AssetId:RequestType. In this way this function
  // fetch data for multiple assets with one api call
  callApi: function(requests, proxy) {
    if(!_.isArray(requests)) requests = [requests];
    var auth = {AuthUserProfile: {request: {requestType: "AuthUserProfile"}}},
        requestData = _.reduce(requests, function(memo, x) {
          return _.extend(memo, x);
        }, auth),
        svcUrl = (proxy ? this.PROXY_URL : this.SVC_URL),
        data = (proxy ? {requestData:requestData} : "requestData="+$j.toJSON(requestData));
    $j.ajax({
      type: 'post',
      url: svcUrl,
      data: data,
      dataType: 'json',
      success: _.bind(this.updateAssets, this)
    });
  }
});

$j(document).ready(function() {
  NYTD.NYTINT.SharedAssetManager = new NYTD.NYTINT.AssetManager();
});

})();